In August when AP first confirmed deal with TD, CIBC released a statement stating they were looking at legal recourse.

Unsurprisingly, there is no public record of a claim as the claim would have released sensitive information.

Most likely CIBC-AP K had a confidential arbitration clause in it. If not, CIBC could have waived a Statement of Claim under AP's nose and threatened to issue it.

What is clear is CIBC made reference to lawyers around August 10th, and by around August 26th, CIBC was back in the picture under the revised deal.